Ball-bearing.



' A.IISPIELMAN.

BALL BEARING. APPLlcATgoN Flu-:n SEPT. 251. 1915.

`memd Apr. 2 191s.

- ATTORNEY.

pas sans ADOLPH SPIELMAN, 0F PHILADELPHIA ASSIGNMENTS, TO LOGAN TRUSTMPANY OF PHILADELPHI A PENNSYLVANIA, SSIGNOR, BY" MESNE TRUSTEE.

EARING'.

fLeaergPatem. raient-ea am. e, iai

714,136.. Divided and this application file@` September 'Y 24:, 1915.Serial No. 52,332.

To cl3 whom t may concern.

Be it known that I, ADOLPH SPIELMAN, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania,have invented certain new and useful Improvements inBall-Bearings, of which thc following is a specificatioin'the sainebeing a division of ni y application for Letters Patent Serial No.714,136, filed August S, 1912.

The principal object of the present invention is to provide a new andnovel method of manufacturing and assembling a ball bearing the balls ofwhich are of the inutilated type and the cage of which is sh.ped

'and proportioned to accept and space said mutilated balls whereby theballs as Well as the cago` may be introduced to proper place with therings in concentric position.

With this and other objects `in view, the invention consists ot theimprovements hereinafter described anc finally elaiined.

The nature, characteristic features and scope of the invention will be-more fully understood from the following description taken inconnection with the accompanying drawings forming part hereof and inwhich, Figure 1, is a view in side elevation, partly sectioned, of acomplete bearing embodying the invention, Fig. Q, is a cross sectionalview of the baring, the cage parts4 being shown intact, Fig. 3, is aView in cross section, taken upon the' line 3-3 of l, Fig. 4t, is a Viewin side elevation of the heaing rings shown in Fig. l, and illustratingthe manner of assembling the spheroids therebetween,

` Fig. 5, illustrates the preferred manner of forming the spheriodsembodying the invention, f

Fics. 6 and 7 are res ectivell views ,in

plan and side elevation of a form of cage seine-what different from thatshown in Figs. 1, S3, and 3,

S, and 9, are respectively views in side elevation and cross section ofa slightly modified/form oi bearing,

Fig. 10, is a detail view, in cross section of one of the cage partsshown in Figs.l 8, and 9, 1

Fig. ll, is a fragmentary vie-W, in section,

illustrating still another form ot bearing,V

and

Figs. 1Q, 13,

and hereinaijter termed a spheroid bcarino ha comprises two concentricrings 10, and ll, preferably of hardened steel, saidfrings hav- Theouter ring 10, has anannnlar ygroove l2, in its inner periphery and theinner ring 11, annular groove 13, in its outer periphery,' which groovesiorin the' races for an interposed seri-s of spheroids or' suitable softiuctal being` arranged in the annular space between said The spheroids14, are arupon their hat or relatively tint faces of said spheroidsbeing arranged in faces oli' the rings 1.0, and 11. The spheririds 14,are preferably formedby" taking hardened steel balls fr., see Fig. and`cutting therefrom as indicated by the dotted lines 7), sphericalsegments c.

to proparticularly adapted lt often hap vpens in-restricted space Whereball-bearings are used, that the balls used are not quite as large asare required to carry a calculated load. By using` spheroidscomparatively and narrow cages may be utilized. In other words. thoseii, which ordinarily cover the spherical segments c, `inst referred tomay be dispensed with. Thus, a relatively Wide ball-bearing a given loadcarrying capacity may have substituted therefor, by the'presentinvention a coinparatively narrow splieroid bearing oi? exaetly thesaine load carrying capacity in a ing an annular space. therelnwtween.

has a confronting 14, acage 15,

bearing rings. ranged to travel within the races `sl'iherical faces. the

parallelism with the Hat The purpose of using spheroids is vide a narrowbearing tor use in restricted space.

narrow bearing rings 10, and 11,

parts of the cage 15, and rings 10, and

in a relatively wide space and of and ll, is illustrated in Fig. il.

centric position, the Hat faces l" soheroids 11i, are then taken betweentween the bearing rings.

and 11i, are similar views illllstratlng still further forms oibearings. The bearing illustrated in the drawing not the the indexlinger and tlnunb ol2 the o pcrator and the spheriods in this positioninserted be- 'lhcn by aV twist of the wrist oi the operatorthevspherical faces oi the spl'ieroids are caused to seat themselveswithin the races of the rings, the

I"With the spheroids in this'position, ,a cage for spacing the spheroidsof the bearing is fitted to place, the outer faces of which arepreferably in the same relative plane as the outer faces of the rings10, and 11. The cage may be of the construction disclosed in Figs. 1, 2,and 3; or that shown in Figs. 6, and 7; or that shown in Figs. 8, 9, and10; or of any other preferred construction.

As shown in Fi s. 1, 2, and 3, the cage is two-part and is' o I the type.usually termed a divider ring, the parts being rigidly connectedtogether by means of screws 17, or by rivets or other suitable mediums.As shown in said figures, the divider rings are provided alternatelyupon their inner faces with inwardly extending projections 18, whichabut against the opposite inner faces of said divider rings. Theseprojections 18, are spaced apart as shown in Fig. 1, and provided withspherical cavities or sockets 19, to accommodate the spherical faces ofthe spheroids. The parts 20, of the divider rings between theprojections 18', areflat as shown in Fig. 2, in order to accommodate theflat faces 16, of the spheroids. In Figs. 6, and 7, the cage 21, isshown as compris- 'ing a one-piece construction and consists of anannular rib 22, provided at intervals therearound with generallyU-shaped splicroid receiving sockets 23. are each provided witha flatpart 2l, to accommodate one of the flat faces 1G, of the spheroids 14,and withfconcaved parts 25, to accommodate the ysiheriral faces of thespheroids. These parts 25, are of such dimension that when the spheroidsare in proper position within the cage the free ends of the parts 25,may be turned over at the point's designated by the dotted lines (l, toretain the sphcroids in place. As shown in Figs; 8,-and 9, the lat facesof the sphc roids'are provided with lateral pins 26. These pins 26, areadapted to be received by apertures 27, in the opposite sides of thedivider ring 2S, screws 29, rivets or the`li^ke` being present forrigidly connecting the two-part divider ring to place. As shown in F1g.11, the cage 29, is secured to place by means of screws 30, or othersuitable means, the screws passing through thesphef roids and aroundwhich the sphoroids are capable of revolving. As shown in Fig. 12, thespheroid 31, is of generally disk-like configuration; in Fig. 13, thespheroid is shown as comprising a relatively fiat sided member havinggenerally convexed crown portions 32; and in Fig. 14:, the spheroid 33,has generally tapered convexed bearing face 34. By this inventioncomparatively narrow cages and consequently comparatively nar- 6'5 rowbearing rings may be employed without decreasing the load carryingcapacity' of a spheroid bearing over an ordinary ballbearing havingraces ofwthe same size. It may be remarked also that the type of bearingjust described provides an excellent end thrust bearing, which obviouslyis advantageous. This is true because each spheroid can only revolvearound its single axis and the flat ,faces of the spheroids receive endthrusts without twisting of the s heroids within the races, consequentlylitt e or n,0 friction is present. In an ordinary ballbearing, however,end thrusts tend to cause the balls to twist within the races, becausethe balls are free to rotate/around several axes, and such twisting ofthe balls serves to cause'friction. It is to be further noted that thespheroid race may in the above de-v scribed bearing be of the samedimension as an ordinary ball-bearing and accommodate spheroids ofthesame diameter as balls to run therein considered concentrically ofthe bearing, but yet save in width of the bearing much valuable space.WVla't I claim is:

The method of manufacturing and assembling a ball bearing, the balls ofwhich are of the mutilated type which consists in Jforming inner andouter rings having opposing grooves forming a raceway, said rings beingseparated by a distance equal`- to the width or'distance between the Hati sides of a mutilated ball when the rings are concentric, introducingthrough said spaceloo with the rings in concentric position a continuousseries of mutilatedballs in sidewise position and then turning them overupon themselves so that they distribute them* selves in self-sustainingposition within the raceway with their circumferences tracking in theraceway and securing them so that they will be maintained in thisposition. In testimony whereof, I have hereunto signed my name.

ADOLPH SPIELMAN. In the presence of- VILLIAM J. JACKSON, HELEN M. BYRNE.

